Homeowners typically pay for polyjacking based on slab area, repair extent, and regional labor rates. Main cost drivers include material for polyurethane foam, equipment use, crew time, and any required permits or disposal. Understanding price ranges helps buyers set a realistic budget and compare quotes.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Cost per sq ft | $3.50 | $6.00 | $9.50 | Assumes modest repair with standard access |
| Flat-rate project | $2,500 | $6,000 | $12,000 | Varies by area and slab size |
| Labor + Materials | $2,000 | $5,000 | $11,000 | Includes foam, hoses, and rig time |
| Permits/Inspection | $100 | $400 | $1,200 | Region-dependent |
| Delivery/Disposal | $100 | $500 | $1,000 | Dust control and cleanup may apply |
| Warranty/Follow-up | $0 | $250 | $900 | Limited vs extended warranty |
Overview Of Costs
The overview provides total project ranges and per-unit estimates for polyjacking, with baseline assumptions such as slab size, access, and repair depth. Typical projects span 1,500–4,000 sq ft and can require 1–3 days of work depending on site conditions. Per-square-foot pricing usually ranges from $3.50 to $9.50, while full project totals commonly fall between $4,000 and $14,000. Assumptions: standard access, moderate voids, and no extensive structural work.
Cost Breakdown
Breaking down where the money goes helps buyers spot value and negotiates confidently.
| Category | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials | $1,500 | $3,000 | $6,000 | Polyurethane foam density and yield affect cost |
| Labor | $1,200 | $3,000 | $7,000 | Hours depend on slab layout and height of voids |
| Equipment | $300 | $1,000 | $2,000 | Foam machines, hoses, and containment gear |
| Permits | $0 | $200 | $1,000 | Local code requirements vary |
| Delivery/Disposal | $50 | $350 | $700 | Waste handling and site cleanup |
| Warranty | $0 | $150 | $600 | Based on contractor policy |
| Contingency | $150 | $500 | $1,500 | Unexpected voids or drainage issues |
What Drives Price
Key drivers include slab area, void depth, and access constraints that affect crew time and foam yield. Other impactful factors are regional labor rates, foam material grade, and the presence of infill or reinforcing materials. Regional differences can swing totals by 10–25%, while extensive voids or complex shapes raise per-square-foot costs toward the high end.
Factors That Affect Price
Pricing varies with material specifications and job complexity. Niche drivers include the required foam density (lighter for cosmetic pour-ins, denser for structural voids) and the number of access points. For example, more corners or grade changes increase crew setup time and foam usage, raising both per-square-foot and total costs.
Ways To Save
Smart budgeting focuses on planning, timing, and quoting multiple pros. Consider requesting multiple quotes, asking for itemized breakdowns, and choosing standard foam densities if acceptable. Timing can influence price: off-peak months may yield better rates, while coordination with nearby projects can reduce mobilization costs.
Regional Price Differences
Prices vary across regions due to labor markets and material costs. Example deltas: Urban Northeast often runs 10–20% higher than Rural Midwest; West Coast regions may be 15–25% above national averages for similar jobs. Plan for ±% price variance when comparing bids from three nearby contractors.
Labor & Installation Time
Labor hours depend on slab size, void depth, and access. Typical installations: small residence slabs (1,000–2,000 sq ft) take 1–2 days; larger or more complex jobs extend to 3 days. A common rule is 2–4 hours per 1,000 sq ft for standard void filling, plus setup and cleanup.
Additional & Hidden Costs
Expect potential extras beyond base pricing. Hidden costs may include additional trenching, driveway or sidewalk protection, HVAC vent sealing, or extended cleanup. Some firms add a contingency of 5–15% for unforeseen voids or drainage issues. Taxes are applied where required by state rules.
Real-World Pricing Examples
Assumptions: region, slab size, access, and foam density.
Basic Scenario
Slab size: 1,200 sq ft; light voids; good access; standard density foam. Labor: 14 hours; Materials: $2,000; Total: $4,500–$5,800; Per sq ft: $3.75–$4.85.
Mid-Range Scenario
Slab size: 2,800 sq ft; moderate voids; moderate access; medium density foam. Labor: 26 hours; Materials: $4,000; Delivery/Disposal: $350; Total: $8,000–$11,000; Per sq ft: $2.86–$3.93.
Premium Scenario
Slab size: 4,500 sq ft; extensive voids; complex layout; high-density foam. Labor: 40 hours; Materials: $7,000; Permits: $800; Total: $14,000–$20,000; Per sq ft: $3.11–$4.44.
Assumptions: region, specs, labor hours.
